<![CDATA[Freeplaytech Forum - Programming & Development]]> https://forum.freeplaytech.com/ Wed, 13 May 2026 11:09:58 +0000 MyBB <![CDATA[FreePlay Zero (640x480) with CM4]]> https://forum.freeplaytech.com/showthread.php?tid=5406 Thu, 30 Mar 2023 12:33:01 +0000 Dani]]> https://forum.freeplaytech.com/showthread.php?tid=5406
Been playing with the idea of adding a CM4 Pi to the new FP Zero using a breakout board (been trying out the Waveshare Nano Base Board that breakout out the GPIO pins and camera connection among other IO) but have run into a slight problem.

The camera CSI connect on the Pi Zero is different from that on full sized Pis (like the 4B, 3B+, 3A+ and CM4 breakout boards), which for cameras isn’t an issue as there is a ribbon cable that converts for these different sizes but trying this with the FP Zero unfortunately isn’t being picked up by the Pi.

I wondered if anyone else has been toying with trying to run a more powerful Pi on the FP Zero 640x480 board (internally or externally from the GBA shell as non will fit natively and had any thoughts on what type of ribbon cable or adaptor would be needed to get the FP Zero to talk with Pis with the larger but less pins CSI port.]]>
Been playing with the idea of adding a CM4 Pi to the new FP Zero using a breakout board (been trying out the Waveshare Nano Base Board that breakout out the GPIO pins and camera connection among other IO) but have run into a slight problem.

The camera CSI connect on the Pi Zero is different from that on full sized Pis (like the 4B, 3B+, 3A+ and CM4 breakout boards), which for cameras isn’t an issue as there is a ribbon cable that converts for these different sizes but trying this with the FP Zero unfortunately isn’t being picked up by the Pi.

I wondered if anyone else has been toying with trying to run a more powerful Pi on the FP Zero 640x480 board (internally or externally from the GBA shell as non will fit natively and had any thoughts on what type of ribbon cable or adaptor would be needed to get the FP Zero to talk with Pis with the larger but less pins CSI port.]]> <![CDATA[Compute Module 4S]]> https://forum.freeplaytech.com/showthread.php?tid=5320 Thu, 07 Apr 2022 22:41:05 +0000 barleyguy]]> https://forum.freeplaytech.com/showthread.php?tid=5320
As a side note, I love my Freeplay Zero with the Pi Zero 2W. It has become my most used handheld.

Cheers.]]>
As a side note, I love my Freeplay Zero with the Pi Zero 2W. It has become my most used handheld.

Cheers.]]> <![CDATA[PI Zero 2 is out]]> https://forum.freeplaytech.com/showthread.php?tid=5271 Thu, 28 Oct 2021 09:40:26 +0000 stek692003]]> https://forum.freeplaytech.com/showthread.php?tid=5271
https://www.raspberrypi.com/news/new-ras...ero-2-w-2/

https://www.youtube.com/watch?v=lKS2ElWQizA

Hopefully a straight swap in the Freeplay Zero with just software changes needed.]]>
https://www.raspberrypi.com/news/new-ras...ero-2-w-2/

https://www.youtube.com/watch?v=lKS2ElWQizA

Hopefully a straight swap in the Freeplay Zero with just software changes needed.]]> <![CDATA[CM4 is out. Freeplay CM4?]]> https://forum.freeplaytech.com/showthread.php?tid=5167 Mon, 19 Oct 2020 17:52:12 +0000 barleyguy]]> https://forum.freeplaytech.com/showthread.php?tid=5167
I'd love to see a Freeplay CM4. Also, it needs an IPS screen, maybe 640x480 like the Piboy DMG.

I love the GBA form factor. Having a GBA with a Pi 4 and IPS screen would be awesome.

Cheers.]]>
I'd love to see a Freeplay CM4. Also, it needs an IPS screen, maybe 640x480 like the Piboy DMG.

I love the GBA form factor. Having a GBA with a Pi 4 and IPS screen would be awesome.

Cheers.]]> <![CDATA[[Driver] juj fbcp ili9341]]> https://forum.freeplaytech.com/showthread.php?tid=4989 Fri, 19 Jul 2019 17:26:55 +0000 Porcinus]]> https://forum.freeplaytech.com/showthread.php?tid=4989 Before start warning: If you don't think you are able to do this, don't do it.
Pre-compiled binary are available for FPZ/CM3 and maintain by Mootikins : https://github.com/Mootikins/FreeplayILI9341

I will try to summary the whole discussion with Slow Catalyst (https://forum.freeplaytech.com/showthread.php?tid=4931).
I will add as much additional information as possible in case someone other need it.


Clone juj driver repo thru SSH :
Code:
cd /home/pi/Freeplay/
git clone https://github.com/juj/fbcp-ili9341


Edit '/boot/config.txt' (Comment mean add # at beginning of the line):
Comment all "dtoverlay=waveshare32b"
Comment dtparam=spi=on


Disable all services:
Code:
sudo systemctl stop fbcpCropped.service
sudo systemctl stop fbcpOld.service
sudo systemctl disable fbcpCropped.service
sudo systemctl disable fbcpOld.service
reboot


Restart the device (no picture, it is normal), then edit '/home/pi/Freeplay/fbcp-ili9341/config.h':
Comment mean add // at beginning of the line, to uncomment, remove it.

ALL_TASKS_SHOULD_DMA //to uncomment, as Mootikins pointed out, the one not really needed
SAVE_BATTERY_BY_PREDICTING_FRAME_ARRIVAL_TIMES //to comment, framerate drop fix
DISPLAY_FLIP_ORIENTATION_IN_SOFTWARE //to comment, I don't remember why
SAVE_BATTERY_BY_SLEEPING_WHEN_IDLE //to comment, good catch kmacmart@darkcloud.ca


Edit '/home/pi/Freeplay/fbcp-ili9341/freeplaytech_waveshare32b.h':
This part is a bit tricky, juj driver doesn't support use of '/boot/freeplayfbcp.cfg'.
If you are running fullscreen, set all value to 0.
Otherwise take value for '/boot/freeplayfbcp.cfg':

DISPLAY_NATIVE_COVERED_TOP_SIDE is left border of the screen
DISPLAY_NATIVE_COVERED_LEFT_SIDE is top border of the screen
DISPLAY_NATIVE_COVERED_RIGHT_SIDE is bottom border of the screen so 240-FREEPLAY_SCALED_H-FREEPLAY_SCALED_OFFSET_Y
DISPLAY_NATIVE_COVERED_BOTTOM_SIDE is right border of the screen so 320-FREEPLAY_SCALED_W-FREEPLAY_SCALED_OFFSET_X


Compiling:
Follow Building and running section on juj repository, for cmake, as a test, you can use :

cmake -DARMV8A=ON -DFREEPLAYTECH_WAVESHARE32B=ON -DSPI_BUS_CLOCK_DIVISOR=6 -DDISPLAY_BREAK_ASPECT_RATIO_WHEN_SCALING=ON -DUSE_DMA_TRANSFERS=ON -DSTATISTICS=0 ..

Once started, you should get a output like this (took it from Slow Catalyst comment):
Code:
bcm_host_get_peripheral_address: 0x3f000000, bcm_host_get_peripheral_size: 16777216, bcm_host_get_sdram_address: 0xc0000000
BCM core speed: current: 250000000hz, max turbo: 400000000hz. SPI CDIV: 6, SPI max frequency: 66666667hz
Allocated DMA channel 2
Allocated DMA channel 5
Enabling DMA channels Tx:2 and Rx:5
DMA hardware register file is at ptr: 0x75b3b000, using DMA TX channel: 2 and DMA RX channel: 5
DMA hardware TX channel register file is at ptr: 0x75b3b200, DMA RX channel register file is at ptr: 0x75b3b500
DMA channel 0 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 1 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 2 has peripheral map 13 (is lite channel: 0, currently active: 1, current control block: (nil))
DMA channel 3 has peripheral map 5 (is lite channel: 0, currently active: 1, current control block: 0xff4fc520)
DMA channel 4 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 5 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 6 has peripheral map 13 (is lite channel: 0, currently active: 1, current control block: (nil))
DMA channel 7 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 8 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 9 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 10 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 11 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 12 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 13 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 14 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA TX channel 2 was assigned another peripheral map 13!
DMA TX channel was assigned another peripheral map!

if you see at the end "was assigned another peripheral map...", you will need to set DMA channels by hand, to do so, you need to choise channels with "is lite channel: 0, currently active: 0", in the example: 0,1,4,5 are available.

Add before '..' (don't miss to add spaces before/after), -DDMA_TX_CHANNEL=1 -DDMA_RX_CHANNEL=5

Then recompile and rerun to check if this work.

Important note: If you plan to use a emulator that use DMA (e.g. Reicast), please run it will the driver is still running into terminal to check if there is some possible conflicts. If the happen, the screen will goes black or white but not more update. Press Ctrl-C to kill the program then restart it with 'sudo /home/pi/Freeplay/fbcp-ili9341/build/fbcp-ili9341' to see what channels are still available.

If not picture on the screen, try another channels. If this goes anywhere, revert back all modifications in "/boot/config.txt" then run 'sudo /home/pi/RetroPie/retropiemenu/dispMenu.sh' to set back the right display driver.

If it work, two possibility :
- edit '/etc/rc.local' and add before the line containing 'shutdown_daemon.py', in a new line :
/home/pi/Freeplay/fbcp-ili9341/build/fbcp-ili9341

- run it as a service : https://forum.freeplaytech.com/showthrea...37#pid8737

Restart the device

I hope I didn't make any mistake, if so, post a reply and I will update the post Smile]]> Before start warning: If you don't think you are able to do this, don't do it.
Pre-compiled binary are available for FPZ/CM3 and maintain by Mootikins : https://github.com/Mootikins/FreeplayILI9341

I will try to summary the whole discussion with Slow Catalyst (https://forum.freeplaytech.com/showthread.php?tid=4931).
I will add as much additional information as possible in case someone other need it.


Clone juj driver repo thru SSH :
Code:
cd /home/pi/Freeplay/
git clone https://github.com/juj/fbcp-ili9341


Edit '/boot/config.txt' (Comment mean add # at beginning of the line):
Comment all "dtoverlay=waveshare32b"
Comment dtparam=spi=on


Disable all services:
Code:
sudo systemctl stop fbcpCropped.service
sudo systemctl stop fbcpOld.service
sudo systemctl disable fbcpCropped.service
sudo systemctl disable fbcpOld.service
reboot


Restart the device (no picture, it is normal), then edit '/home/pi/Freeplay/fbcp-ili9341/config.h':
Comment mean add // at beginning of the line, to uncomment, remove it.

ALL_TASKS_SHOULD_DMA //to uncomment, as Mootikins pointed out, the one not really needed
SAVE_BATTERY_BY_PREDICTING_FRAME_ARRIVAL_TIMES //to comment, framerate drop fix
DISPLAY_FLIP_ORIENTATION_IN_SOFTWARE //to comment, I don't remember why
SAVE_BATTERY_BY_SLEEPING_WHEN_IDLE //to comment, good catch kmacmart@darkcloud.ca


Edit '/home/pi/Freeplay/fbcp-ili9341/freeplaytech_waveshare32b.h':
This part is a bit tricky, juj driver doesn't support use of '/boot/freeplayfbcp.cfg'.
If you are running fullscreen, set all value to 0.
Otherwise take value for '/boot/freeplayfbcp.cfg':

DISPLAY_NATIVE_COVERED_TOP_SIDE is left border of the screen
DISPLAY_NATIVE_COVERED_LEFT_SIDE is top border of the screen
DISPLAY_NATIVE_COVERED_RIGHT_SIDE is bottom border of the screen so 240-FREEPLAY_SCALED_H-FREEPLAY_SCALED_OFFSET_Y
DISPLAY_NATIVE_COVERED_BOTTOM_SIDE is right border of the screen so 320-FREEPLAY_SCALED_W-FREEPLAY_SCALED_OFFSET_X


Compiling:
Follow Building and running section on juj repository, for cmake, as a test, you can use :

cmake -DARMV8A=ON -DFREEPLAYTECH_WAVESHARE32B=ON -DSPI_BUS_CLOCK_DIVISOR=6 -DDISPLAY_BREAK_ASPECT_RATIO_WHEN_SCALING=ON -DUSE_DMA_TRANSFERS=ON -DSTATISTICS=0 ..

Once started, you should get a output like this (took it from Slow Catalyst comment):
Code:
bcm_host_get_peripheral_address: 0x3f000000, bcm_host_get_peripheral_size: 16777216, bcm_host_get_sdram_address: 0xc0000000
BCM core speed: current: 250000000hz, max turbo: 400000000hz. SPI CDIV: 6, SPI max frequency: 66666667hz
Allocated DMA channel 2
Allocated DMA channel 5
Enabling DMA channels Tx:2 and Rx:5
DMA hardware register file is at ptr: 0x75b3b000, using DMA TX channel: 2 and DMA RX channel: 5
DMA hardware TX channel register file is at ptr: 0x75b3b200, DMA RX channel register file is at ptr: 0x75b3b500
DMA channel 0 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 1 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 2 has peripheral map 13 (is lite channel: 0, currently active: 1, current control block: (nil))
DMA channel 3 has peripheral map 5 (is lite channel: 0, currently active: 1, current control block: 0xff4fc520)
DMA channel 4 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 5 has peripheral map 0 (is lite channel: 0, currently active: 0, current control block: (nil))
DMA channel 6 has peripheral map 13 (is lite channel: 0, currently active: 1, current control block: (nil))
DMA channel 7 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 8 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 9 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 10 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 11 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 12 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 13 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA channel 14 has peripheral map 0 (is lite channel: 1, currently active: 0, current control block: (nil))
DMA TX channel 2 was assigned another peripheral map 13!
DMA TX channel was assigned another peripheral map!

if you see at the end "was assigned another peripheral map...", you will need to set DMA channels by hand, to do so, you need to choise channels with "is lite channel: 0, currently active: 0", in the example: 0,1,4,5 are available.

Add before '..' (don't miss to add spaces before/after), -DDMA_TX_CHANNEL=1 -DDMA_RX_CHANNEL=5

Then recompile and rerun to check if this work.

Important note: If you plan to use a emulator that use DMA (e.g. Reicast), please run it will the driver is still running into terminal to check if there is some possible conflicts. If the happen, the screen will goes black or white but not more update. Press Ctrl-C to kill the program then restart it with 'sudo /home/pi/Freeplay/fbcp-ili9341/build/fbcp-ili9341' to see what channels are still available.

If not picture on the screen, try another channels. If this goes anywhere, revert back all modifications in "/boot/config.txt" then run 'sudo /home/pi/RetroPie/retropiemenu/dispMenu.sh' to set back the right display driver.

If it work, two possibility :
- edit '/etc/rc.local' and add before the line containing 'shutdown_daemon.py', in a new line :
/home/pi/Freeplay/fbcp-ili9341/build/fbcp-ili9341

- run it as a service : https://forum.freeplaytech.com/showthrea...37#pid8737

Restart the device

I hope I didn't make any mistake, if so, post a reply and I will update the post Smile]]> <![CDATA[[Software] FreeplayADC2Backlight]]> https://forum.freeplaytech.com/showthread.php?tid=4985 Sat, 13 Jul 2019 22:47:39 +0000 Porcinus]]> https://forum.freeplaytech.com/showthread.php?tid=4985
https://github.com/porcinus/FreeplayADC2Backlight]]>
https://github.com/porcinus/FreeplayADC2Backlight]]> <![CDATA[[Hardware] Custom Addon Board with USB/WiFi/ADC/RTC]]> https://forum.freeplaytech.com/showthread.php?tid=4777 Fri, 15 Mar 2019 23:16:35 +0000 Porcinus]]> https://forum.freeplaytech.com/showthread.php?tid=4777

The idea about this project is to combine all additional features you could need on a handheld machine but keeping modification on the motherboard as low as possible, Note: this is intended to work on the Freeplay CM3 platform.

The PCB borders, headers position, CPU heatsink clearance and L2/R2 switches positions are the same.
This addon board embed a USB Nanohub with 2 ports, a BL-R8188FU3 WiFi module (RTL8188FTV with IPEX connector), a DS3231M RTC chip, 3 MCP3021A ADC chips (2 chips for the the Joystick and one for the battery monitoring), a 16x16x4.5 fan (the same used in the original addon board). Revision 3 now use a ADS1015 to allow use of 2 joystick at the same time.

Due to USB hub and WiFi module needing to be in the USB header side, the fan position has been switch to the other side of the CPU heatsink but because of this the hotkey switch needed to be moved as well.
A AMS1117-3.3 is used to power the WiFi module and the ADC chips reading the joystick position.

Following recommendation from Flavor, the ADC chip used to monitor battery voltage is running at 4.5v using a MAX6107 voltage reference chip.
The battery voltage also feed the VBAT pin on the RTC chip, the power consumption when the console is off is negligible.

The fan is still controlled with pin 40 using a NPN transistor.


.png   board-rev02b.png (Size: 143.85 KB / Downloads: 32)
.jpg   04.jpg (Size: 251.99 KB / Downloads: 47)
.jpg   05.jpg (Size: 385 KB / Downloads: 69)
.jpg   03.jpg (Size: 200.59 KB / Downloads: 35)

I own a CNC milling machine and all milling bits for this kind of project, machining the PCB with a 0.2mm engraving bits take arround 5 hours. I can only solder components using soldering iron (not hot air or other process) so soldering and checking continuity during this build took me about 4 hours.
I am not really good with PCB design softwares so I falled back to the software I known for CNC machining : Cambam, anything need to be drawn by hand, if you move a component you need to update any traces that goes to it one by one so it was kind of a pain.


About power consumption (of the whole machine, on the battery level), tests done without EmulationStation running, TFT backlight at 15%:
- WiFi unpaired : 0.28A
- Paired to network + SSH session : 0.42A
- Transferring a big file thru SSH (some power go to the SSH decoding itselft) : 0.48A, 0.51A (peek)
- if wlan0 down + rfkill (thru a custom item in Retropie menu) :  0.28A
- WiFi disconnected (thru a WiFi in Retropie menu) :  0.28A
Results are not that bad, around 140mAh when paired and 230mAh when transferring data.


I live in France so getting IC parts (especially ADC chips) is far from cheap:
eBay - SMD 0805 resistor/capacitor : 10usd
eBay - Switches : 1usd
Tindie - NanoHub USB : 10usd
eBay - AMS1117-3.3 regulator : 1usd
eBay - BL-R8188FU3 WiFi module (RTL8188FTV) : 5usd
eBay - DS3231M RTC module : 2usd
eBay - MMBT2222A NPN Transistor : 1usd
eBay - MCP3021 ADC chip (3pcs) : 18usd
eBay - MAX6107 : 5usd
Digi-Key - 16mm Fan : 7usd
Total : 60usd

Price example if you order more parts on Digi-Key:
Digi-Key - SMD 0805 resistor/capacitor : 5usd
Digi-Key - Switches : 0.5usd
Tindie - NanoHub USB : 10usd
eBay - AMS1117-3.3 regulator : 1usd
eBay - BL-R8188FU3 WiFi module (RTL8188FTV) : 5usd
eBay - DS3231M RTC module : 2usd
Digi-Key - MMBT2222A NPN Transistor : 0.2usd
Digi-Key - MCP3021 ADC chip (3pcs) : 3usd
Digi-Key - MAX6107 : 2usd
Digi-Key - 16mm Fan : 7usd
Total : <35usd

These prices don't include time need to milling the PCB, the soldering time or any kind of labor.

Design files : https://github.com/porcinus/Freeplay-Custom-Addon-Board

If you have any questions, feel free to ask Smile]]>

The idea about this project is to combine all additional features you could need on a handheld machine but keeping modification on the motherboard as low as possible, Note: this is intended to work on the Freeplay CM3 platform.

The PCB borders, headers position, CPU heatsink clearance and L2/R2 switches positions are the same.
This addon board embed a USB Nanohub with 2 ports, a BL-R8188FU3 WiFi module (RTL8188FTV with IPEX connector), a DS3231M RTC chip, 3 MCP3021A ADC chips (2 chips for the the Joystick and one for the battery monitoring), a 16x16x4.5 fan (the same used in the original addon board). Revision 3 now use a ADS1015 to allow use of 2 joystick at the same time.

Due to USB hub and WiFi module needing to be in the USB header side, the fan position has been switch to the other side of the CPU heatsink but because of this the hotkey switch needed to be moved as well.
A AMS1117-3.3 is used to power the WiFi module and the ADC chips reading the joystick position.

Following recommendation from Flavor, the ADC chip used to monitor battery voltage is running at 4.5v using a MAX6107 voltage reference chip.
The battery voltage also feed the VBAT pin on the RTC chip, the power consumption when the console is off is negligible.

The fan is still controlled with pin 40 using a NPN transistor.


.png   board-rev02b.png (Size: 143.85 KB / Downloads: 32)
.jpg   04.jpg (Size: 251.99 KB / Downloads: 47)
.jpg   05.jpg (Size: 385 KB / Downloads: 69)
.jpg   03.jpg (Size: 200.59 KB / Downloads: 35)

I own a CNC milling machine and all milling bits for this kind of project, machining the PCB with a 0.2mm engraving bits take arround 5 hours. I can only solder components using soldering iron (not hot air or other process) so soldering and checking continuity during this build took me about 4 hours.
I am not really good with PCB design softwares so I falled back to the software I known for CNC machining : Cambam, anything need to be drawn by hand, if you move a component you need to update any traces that goes to it one by one so it was kind of a pain.


About power consumption (of the whole machine, on the battery level), tests done without EmulationStation running, TFT backlight at 15%:
- WiFi unpaired : 0.28A
- Paired to network + SSH session : 0.42A
- Transferring a big file thru SSH (some power go to the SSH decoding itselft) : 0.48A, 0.51A (peek)
- if wlan0 down + rfkill (thru a custom item in Retropie menu) :  0.28A
- WiFi disconnected (thru a WiFi in Retropie menu) :  0.28A
Results are not that bad, around 140mAh when paired and 230mAh when transferring data.


I live in France so getting IC parts (especially ADC chips) is far from cheap:
eBay - SMD 0805 resistor/capacitor : 10usd
eBay - Switches : 1usd
Tindie - NanoHub USB : 10usd
eBay - AMS1117-3.3 regulator : 1usd
eBay - BL-R8188FU3 WiFi module (RTL8188FTV) : 5usd
eBay - DS3231M RTC module : 2usd
eBay - MMBT2222A NPN Transistor : 1usd
eBay - MCP3021 ADC chip (3pcs) : 18usd
eBay - MAX6107 : 5usd
Digi-Key - 16mm Fan : 7usd
Total : 60usd

Price example if you order more parts on Digi-Key:
Digi-Key - SMD 0805 resistor/capacitor : 5usd
Digi-Key - Switches : 0.5usd
Tindie - NanoHub USB : 10usd
eBay - AMS1117-3.3 regulator : 1usd
eBay - BL-R8188FU3 WiFi module (RTL8188FTV) : 5usd
eBay - DS3231M RTC module : 2usd
Digi-Key - MMBT2222A NPN Transistor : 0.2usd
Digi-Key - MCP3021 ADC chip (3pcs) : 3usd
Digi-Key - MAX6107 : 2usd
Digi-Key - 16mm Fan : 7usd
Total : <35usd

These prices don't include time need to milling the PCB, the soldering time or any kind of labor.

Design files : https://github.com/porcinus/Freeplay-Custom-Addon-Board

If you have any questions, feel free to ask Smile]]> <![CDATA[[Software] FreeplayBacklightDaemon]]> https://forum.freeplaytech.com/showthread.php?tid=4775 Fri, 15 Mar 2019 18:32:43 +0000 Porcinus]]> https://forum.freeplaytech.com/showthread.php?tid=4775 It also require to have juj fbcp-ili9341 driver running with backlight control and backlight pin set to put to work.

When backlight pin go low, the program shutdown the TFT backlight, it can be wake there is activity on the screen evdev input is detected (not work with absolute axis like analog input).

Informations to compile juj/fbcp-ili9341 are provided in the link.

https://github.com/porcinus/FreeplayBacklightDaemon]]> It also require to have juj fbcp-ili9341 driver running with backlight control and backlight pin set to put to work.

When backlight pin go low, the program shutdown the TFT backlight, it can be wake there is activity on the screen evdev input is detected (not work with absolute axis like analog input).

Informations to compile juj/fbcp-ili9341 are provided in the link.

https://github.com/porcinus/FreeplayBacklightDaemon]]> <![CDATA[[Software] FreeplayInfo2Overlay]]> https://forum.freeplaytech.com/showthread.php?tid=4774 Fri, 15 Mar 2019 18:20:47 +0000 Porcinus]]> https://forum.freeplaytech.com/showthread.php?tid=4774
This is a set of program that allow user to display a "taskbar" on top of the TFT screen by pressing a defined input like hotkey.
Can monitor battery voltage and try to predict remaining percentage (if ADC data provided), CPU load / temperature, WiFi link speed (if detected) and system time. Depending on arguments passed, it can generate a png file and log file containing battery voltage.

Examples:

.jpg   b10.jpg (Size: 397.02 KB / Downloads: 74)
.png   fb_footer.png (Size: 853 bytes / Downloads: 29)
.png   vbat-plot.png (Size: 2.67 KB / Downloads: 29)
Note: The graph show a full session of gameplay in Reicast (Dreamcast).



https://github.com/porcinus/FreeplayInfo2Overlay]]>
This is a set of program that allow user to display a "taskbar" on top of the TFT screen by pressing a defined input like hotkey.
Can monitor battery voltage and try to predict remaining percentage (if ADC data provided), CPU load / temperature, WiFi link speed (if detected) and system time. Depending on arguments passed, it can generate a png file and log file containing battery voltage.

Examples:

.jpg   b10.jpg (Size: 397.02 KB / Downloads: 74)
.png   fb_footer.png (Size: 853 bytes / Downloads: 29)
.png   vbat-plot.png (Size: 2.67 KB / Downloads: 29)
Note: The graph show a full session of gameplay in Reicast (Dreamcast).



https://github.com/porcinus/FreeplayInfo2Overlay]]> <![CDATA[[Driver] mk_arcade_joystick_rpi GPIO Driver]]> https://forum.freeplaytech.com/showthread.php?tid=4773 Fri, 15 Mar 2019 18:03:09 +0000 Porcinus]]> https://forum.freeplaytech.com/showthread.php?tid=4773
- [Pushed to Github] debug parameter added to output various debug data to dmesg.
- [Pushed to Github] ADC_OffsetCenter() : constrain corrected value for 0-4095 to 1-4094 to try to fix Reicast analog input overflow when using evdev.
- [Pushed to Github] adc_val default is now 2048 (was 0).

Attached file is not to be considered a update but a testing file.]]>
- [Pushed to Github] debug parameter added to output various debug data to dmesg.
- [Pushed to Github] ADC_OffsetCenter() : constrain corrected value for 0-4095 to 1-4094 to try to fix Reicast analog input overflow when using evdev.
- [Pushed to Github] adc_val default is now 2048 (was 0).

Attached file is not to be considered a update but a testing file.]]>