Homebrew tiny pi clone
Homebrew tiny pi clone
Hi guys,
another homebrew project - a tiny pi clone
I designed the board by my self, the board is singlesided for easy home etching. I did use slightly bigger display 1.8" 128x160 px and bigger directional button.
and here is the bare pcb:
If someone would be interested I can share the PCB design and list of components used (all aliexpress)...
another homebrew project - a tiny pi clone
I designed the board by my self, the board is singlesided for easy home etching. I did use slightly bigger display 1.8" 128x160 px and bigger directional button.
and here is the bare pcb:
If someone would be interested I can share the PCB design and list of components used (all aliexpress)...
Re: Homebrew tiny pi clone
I ll just put here everything:
display: https://www.aliexpress.com/item/1pcs-1- ... 4c4dDehBMr
Joystick: https://www.aliexpress.com/item/5-pcs-5 ... 4c4dUIH3yl
Big buttons: https://www.aliexpress.com/item/20PCS-L ... 4c4dUIH3yl
Small buttons: https://www.aliexpress.com/item/100PCS- ... autifyAB=0
Switch: https://www.aliexpress.com/item/50Pcs-M ... autifyAB=0
Power: I have taken out of the mini powerbank that was powered by single 18650 cell
Battery: similar to this: https://www.aliexpress.com/item/Gaoneng ... autifyAB=0
I have created the PCB in easyeda online, and you can download the cb here: http://dorica.sk/downloads/
Just download, change the extension to json and load to easyeda...
For display, I am using fbtft st7735r driver, just enable dtparam=spi-on in config.txt, follow standard procedure to install fbtft and add add following line to your fbtft.conf file:
options fbtft_device custom name=fb_st7735r gpios=reset:25,dc:24 speed=16000000 width=128 height=160 rotate=0 bgr=0 fps=60
For buttons, I have used this guide: https://sudomod.com/forum/viewtopic.php?t=57
display: https://www.aliexpress.com/item/1pcs-1- ... 4c4dDehBMr
Joystick: https://www.aliexpress.com/item/5-pcs-5 ... 4c4dUIH3yl
Big buttons: https://www.aliexpress.com/item/20PCS-L ... 4c4dUIH3yl
Small buttons: https://www.aliexpress.com/item/100PCS- ... autifyAB=0
Switch: https://www.aliexpress.com/item/50Pcs-M ... autifyAB=0
Power: I have taken out of the mini powerbank that was powered by single 18650 cell
Battery: similar to this: https://www.aliexpress.com/item/Gaoneng ... autifyAB=0
I have created the PCB in easyeda online, and you can download the cb here: http://dorica.sk/downloads/
Just download, change the extension to json and load to easyeda...
For display, I am using fbtft st7735r driver, just enable dtparam=spi-on in config.txt, follow standard procedure to install fbtft and add add following line to your fbtft.conf file:
options fbtft_device custom name=fb_st7735r gpios=reset:25,dc:24 speed=16000000 width=128 height=160 rotate=0 bgr=0 fps=60
For buttons, I have used this guide: https://sudomod.com/forum/viewtopic.php?t=57
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- moosepr
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Re: Homebrew tiny pi clone
nicely done!! You might be able to get that speed value up a bit to help make the screen run faster. try this
speed=40000000
speed=40000000
Get a small cheep LCD in your project https://www.sudomod.com/forum/viewtopic.php?f=22&t=2312
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
Wrap it all round a battery https://www.sudomod.com/forum/viewtopic.php?f=13&t=2292
Or use a custom PCB to make it really small https://www.sudomod.com/forum/viewtopic.php?f=13&t=2512
or make it really really really really tiny!! https://www.sudomod.com/forum/viewtopic.php?f=13&t=2919
Re: Homebrew tiny pi clone
I need to mention one thing - it appears I did use too big resitor (150 ohm) for the display backlight. I am going to try lower resitance to make sure the backlight is not so dim:
I am going to try to put one more in paralel, it should lower the resitance to half.
I am going to try to put one more in paralel, it should lower the resitance to half.
- Helder
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Re: Homebrew tiny pi clone
Use a 3.6ohm resistor for proper backlight voltage.
Chat with me and other members On Discord
Don't contact me about obtaining my board files (as you will not get them). If my Boards or PCB Kits are sold out, they will be restocked as soon as I can get them and there is demand for them. You can join the mailing list on my Website to be notified when they are available.
Helder's Game Tech Website
We will not support any cloned work so don't come to us with technical issues to resolve, go talk to the cloner for help.
Don't contact me about obtaining my board files (as you will not get them). If my Boards or PCB Kits are sold out, they will be restocked as soon as I can get them and there is demand for them. You can join the mailing list on my Website to be notified when they are available.
Helder's Game Tech Website
We will not support any cloned work so don't come to us with technical issues to resolve, go talk to the cloner for help.
Re: Homebrew tiny pi clone
When I click the link on your website to download your PCB, I just get a very long line of code.
Check out my bluetooth speaker in an altoids tin! https://sudomod.com/forum/viewtopic.php?t=7274
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