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Qaxe

imcmurray·MyASICS·hardware/qaxe/legacy/qaxe+/qaxe/qaxe.kicad_pcb

Qaxe PCB layout, top view — open source STM32 board by imcmurray
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About the Qaxe PCB

Qaxe is an open source STM32 PCB design by imcmurray, published on GitHub. It is a 4-layer board measuring 89 × 137 mm, with 192 components from 94 distinct parts.

Its main chip is the TXU0304PW, from the STM32 family. Other key parts include the TPS53647, CSD95472Q5MC, AP3211, MCP1824T-0802E and 25MHZ. By type, the board carries 104 capacitors, 49 resistors, 17 ICs, 6 diodes, 5 transistors and 3 connectors.

From the project

Open-source ASIC Bitcoin miner motherboard (NerdQAxe++ 4x BM1370 fork) — fab package for MrMiner ASIC mode

This directory contains deprecated hardware designs that are no longer maintained.

- No bug fixes - No hardware revisions - No firmware updates - No user support

The designs are provided as-is for reference and historical documentation.

- ~2.4 TH/s at ~55 W (230 V measured) - Final revisions: rev4 / rev4.1 - Known quirks with ASIC reset behavior

- ~1.7–1.8 TH/s depending on revision - Multiple early hardware revisions (rev1–rev3.2)

Qaxe, from the project README
From the project README

Main components on the Qaxe

TPS53647CSD95472Q5MCAP3211MCP1824T-0802E25MHZBM1370TXU0101EMC2302-1TXU0102-DCUTXU0304PWMCP1824T-1202ETMP1075

Qaxe bill of materials (BOM)

192 components, 94 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TPS53647
LTC3856
LTC3856EUH#PBF
U3
1
CSD95472Q5MC
MCP1824T-0802E
MCP1824T-0802E/OT
U4
1
AP3211
AP3211KTR-G1
U6
1
MCP1824T-0802E
MCP1824T-1802E
MCP1824T-1802E/OT
U7
1
25MHZ
25MHz
U8
4
BM1370
BM1368_mode1
Bitmain
U19, U20, U25, U26
2
TXU0101
TXU0101DCKR
U29, U39
1
EMC2302-1
TMP1075
TMP1075NDRLR
U32
1
TXU0102-DCU
TMP1075
TMP1075NDRLR
U33
1
TXU0304PW
STM32L072CBT6
STM32L072CBT6
U35
1
MCP1824T-1202E
1117-3.3
LM1117IMPX-3.3/NOPB
U36
2
TMP1075
TXU0101
TXU0101DCKR
U37, U38
2
FAN_4PIN
Fan_4pin
0470531000
M1, M2
4
CSD16415Q5T
CSD16415Q5T
Q3, Q4, Q5, Q6
1
BSS138
BSS138
Q7
1
8MHz
X1
1
5.5MM/8A
Barrel_Jack_Switch
PJ-102AH
J1
1
SWD
PJ-102AH
J3
1
732-61301211821
USB_C_Receptacle_USB2.0
USB4105-GF-A
J6
1
F1239
5A
0154005.DR
F1
Show 74 more
QtyPartRefs
1
boot
KMR221GLFS
SW1
1
SMBJ12A
SMBJ12A
D1
1
1727-5841-1
CMDSH-3
CMDSH-3 TR PBFREE
D2
1
1N5819
CMDSH-3
CMDSH-3 TR PBFREE
D3
1
PMEG4030EP,115
PMEG4030EP,115
D4
2
LED
D5, D6
1
220NH
220nH
FP1008R5-R220-R
L1
1
220nH
FP1008R5-R220-R
L2
1
732-7244-1
4.7µH/2A/3A
LQH5BPN4R7NT0L
L3
1
2.2N
47p
C1
5
100n
C2, C4, C22, C84, C85
1
12P
3.3n
C3
1
330N
1n
C5
1
1276-1029-1
100n
C6
1
490-GRM21BR71C475KE51K
100n
C7
1
1276-1029-1
1n
C8
1
4.7µ/25V
C9
1
100N
100µ/6.3V
C1210C107M9PAC7800
C10
4
399-C1210C107M8PAC7800
100µ/6.3V
C1210C107M9PAC7800
C11, C13, C15, C17
1
587-3169-1
100µ/6.3V
C1210C107M9PAC7800
C12
1
100N
22µ/25V
C1210C226K3PAC7800
C14
1
22µ/25V
C1210C226K3PAC7800
C16
1
2.7N
100n
C18
1
10µF/50V
C19
1
1276-3392-1
1µ
C20
1
399-C1210C107M8PAC7800
10n/250V
C21
1
1276-3392-1
22µ/16V
C23
1
399-C1210C107M8PAC7800
1µ
C24
13
100N
100n
C25, C49, C53, C55, C59, C82, C83, C87 +5
4
490-GRM21BZ71E106KE15L
10µ/16V
C26, C27, C29, C31
44
1276-1029-1
1µ
C28, C30, C32, C33, C34, C35, C36, C37 +36
3
330µ/6.3V
ECG-SY0J331R
C39, C45, C48
2
1µ
C61, C65
1
1276-3392-1
100n
C81
2
490-GRM32ER60G337ME05K
100n
C86, C99
1
490-GRM32ER60G337ME05K
22µ/25V
C1210C226K3PAC7800
C91
1
565-HHXE250ARA221MHA0G
22µ/25V
C1210C226K3PAC7800
C92
1
490-GRM32ER60G337ME05K
220µ/25V
875075355002
C95
1
490-GRM32ER60G337ME05K
22µ/16V
C97
1
490-GRM32ER60G337ME05K
10µF/50V
C98
1
490-GRM21BZ71E106KE15L
100n
C100
1
10N
100n
C104
1
1276-1029-1
22µ/25V
C1210C226K3PAC7800
C105
1
1276-3392-1
4.7µ/6.3V
C106
1
16.5K
10k
R1
1
24.3K
1.5k
R2
1
66.5K
2.2R
R3
1
100K
8.45k
R4
1
121K
100k
R5
1
8.06K
20k
R6
1
2.55K
20k
TLR2HWDTE1L00F50
R7
2
3.3K
200
R8, R9
2
1R/0.5W
200
R10, R11
2
2.2R/0.5W
1mR
TLR2HWDTE1L00F50
R12, R13
2
1R/0.5W
10
R14, R15
1
10K
84.5k
R16
1
16.3k
R17
1
49.9
R18
6
10K
10k
R19, R20, R21, R22, R23, R31
8
10k
R24, R28, R29, R43, R48, R49, R50, R51
1
1R/0.5W
10k
R25
1
22
R26
1
1R/0.5W
22
R27
1
100k
R30
1
84.5K
1.5k
R32
1
2.7K
2.7k
R33
1
16.2K
1.5k
R34
1
2.7K
560
R35
1
10K
560
R36
1
10K
49.9k
R37
1
100
5.1k
R40
1
2.7k
R41
1
5.1k
R42
4
1k
R44, R45, R46, R47

Qaxe design files

The KiCad project lives in the imcmurray/MyASICS repository on GitHub; these links point at the commit this page was built from.

Qaxe: common questions

What microcontroller does the Qaxe use?

The Qaxe is built around the TXU0304PW, from the STM32 family.

How big is the Qaxe PCB?

The Qaxe measures 89 × 137 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Qaxe?

192 components, from 94 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Qaxe design files?

From the imcmurray/MyASICS repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Qaxe design in my own project?

The repository has no license, so all rights stay with imcmurray. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Qaxe without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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