BOM needed

[avloginov]

Hello
Can you please provide actual recommended BOM list for this model ?

[richteel]

Here is a list that I put together. I just built 2 Armchat Compact units using these parts. The only items not included are standoffs and screws to put it together plus two short wires to power the keyboard backlight.

						Totals	75		$    54.64
Line	Req/Optional	Description	MFG	MFG P/N	Supplier	Supplier P/N	QTY	EA	EXT
1	Required	Set of Armachat PCBs	Peter Bobrovsky Misenko		Tindie	armachat-lora-messenger-with-raspberry-pi-pico	1	$    19.98	$    19.98
2	Required	Raspberry PICO	Raspberry Pi	SC0915	Digi-Key	2648-SC0915CT-ND	1	$       4.00	$       4.00
3	Required	RFM95W - radio module with frequency for your country	DUOWEISI		AliExpress	DUOWEISI Module Store	1	$       3.40	$       3.40
4	Required	2.0" IPS screen - 12PIN 320x240 ST7789V	DUOWEISI		AliExpress	DUOWEISI Module Store	1	$       5.60	$       5.60
5	Required	DTS63K - tactile switch 7mm height, 1N (100gf)	C&K	PTS645SL702 LFS	Digi-Key	CKN9071-ND	30	$       0.16	$       4.76
6	Required+Optional	BSS123 - Transistor (N-MOSFET)			AliExpress	Fantasy Electronics CO., Ltd	2	$       0.01	$       0.03
7	Required	10R 0603 - Resistor	Bourns Inc.	CR0603-FX-10R0ELF	Digi-Key	CR0603-FX-10R0ELFCT-ND	1	$       0.01	$       0.01
8	Required+Optional	4k7 0603 - Resistor	Bourns Inc.	CR0603-FX-4701ELF	Digi-Key	CR0603-FX-4701ELFCT-ND	2	$       0.01	$       0.01
9	Required	LPT1109DS - Piezo	Cre-sound Electronics	LPT1109DS-HL-05-4.1-12-R	TME Electronics	LPT1109DS-HL-05	1	$       0.73	$       0.73
10	Optional	JS202011CQN C&K or MSS-2235 NINIGI - Slide Switch	C&K	JS202011AQN	Digi-Key	401-2000-ND	1	$       0.52	$       0.52
11	Optional	100R 0603 - Resistor	Bourns Inc.	CR0603AFX-1000EAS	Digi-Key	CR0603AFX-1000EASCT-ND	1	$       0.02	$       0.02
12	Optional	led 0802 - Side LED	Citizen	CL-270S-WS-SD-TS	Digi-Key	1642-1500-1-ND	30	$       0.23	$       6.95
13	Not Indicated	Antenna connector - Edge-Launch SMA Connector for 1.6mm / 0.062" Thick PCBs			Adafruit	1865	1	$       2.50	$       2.50
14	Not Indicated	Diode Schottky 40 V 3A Surface Mount SMAflat Notch	STMicroelectronics	STPS340AFN	Digi-Key	497-STPS340AFNCT-ND	1	$       0.38	$       0.38
15	Not Indicated	LoRa Antenna (SMA)			Amazon	B091PRHPTJ	1	$       5.75	$       5.75

[Kayto]

Also see here for Armachat documentation including BOM.

[richteel]

@Kayto, I like what you have done, I'm in the process of doing the same thing. Perhaps it would be better to collaborate. I also plan to upload a few videos on YouTube as well. I recorded my building of the Compact Armchat. I trying to work through the software to see how it works and see if I can fix some bugs that I noticed. I'm also looking for documentation for the configuration of the devices. It seems that I have not been able to locate any documentation on the configuration. I believe I need to uncomment one of the lines to select the correct modem but cannot find information on how to determine which line is the correct line to uncomment. Also see that there is an encryption setting but not certain what a proper setting for this would be.

[Kayto]

@richteel sounds good to collaborate. Suggest we now treat this issue as closed.

I will add you as a collaborator on my fork. Might be cleaner like this.
I can share the guide for you to add any links etc.
I am not much of a programmer but know the settings you refer to.

I have added discussions on my fork to address some questions.

[Kayto]

@richteel
https://github.com/Kayto/Armachat-circuitpython/discussions