I recently bought a couple boards off Amazon (vendor was DIYmalls) and I'm pretty sure the ad said ESP32. These are the boards with 2.8" LCD display. I see now that the boards have Sparkle IOT XH-32S - laser etched on the metal shield of the WIFI module. Are these the same as ESP-WROOM 32 ?

Looks limited. https://fccid.io/2BCLR-XH32S/User-Manual/User-manual-8107497.pdf

[image] summguy: Are these the same as ESP-WROOM 32 ? It seems to contain the same chip as ESP-WROOM 32: The WiFi module XH-32S is manufactured by using a high-performance chip named ESP32.

The datasheet says it's an ESP32. It also says that it's based on the Tensilica L106 CPU at up to 160MHz, while the ESP32 uses a Tensilica LX6 or LX7 (the ESP8266 is an L106) running up to 240MHz. It also has a block diagram that shows a RISC-V cpu. So... I dunno. I don't think the datasheet is …

Some internal pics from FCC submissions: https://device.report/fccid/2bclr-xh32s It does show it as ESP32-DOWD-R2-V3. Document date 2025-03-05 The SparkleIOT XH-32S 8-page user-manual (Ver V1.1 2018-3-18) that seems to be part of the FCC submission has a document creation date of 2025-03-05. <a name="p-8238003-the-wifi-module-xh-32s-is-manufactured-by-using-a-high-performance-chip-named-esp32-this-small-chip-is-encapsulated-an-enhanced-tensilicas-l106-diamond-series-32-bit-kennel-cpu-with-a-sram-thus-esp32-has-the-complete-function-wi-fi-function-it-can-be-applied-independently-and-also-can-be-used-as-a-slaver-working-with-other-host-cpu-when-esp32-is-applied-as-a-slaver-it-can-start-from-the-onboard-flash-the-built-in-high-speed-buffer-is-not-only-benefit-to-improve-the-system-performance-but-optimize-the-store-system-in-addition-xh-32s-wifi-module-can-be-used-as-wi-fi-adapter-by-spisdio-or-i2cuart-interface-when-it-is-applied-to-other-mcu-design-1" class="anchor" href="#p-8238003-the-wifi-module-xh-32s-is-manufactured-by-using-a-high-performance-chip-named-esp32-this-small-chip-is-encapsulated-an-enhanced-tensilicas-l106-diamond-series-32-bit-kennel-cpu-with-a-sram-thus-esp32-has-the-complete-function-wi-fi-function-it-can-be-applied-independently-and-also-can-be-used-as-a-slaver-working-with-other-host-cpu-when-esp32-is-applied-as-a-slaver-it-can-start-from-the-onboard-flash-the-built-in-high-speed-buffer-is-not-only-benefit-to-improve-the-system-performance-but-optimize-the-store-system-in-addition-xh-32s-wifi-module-can-be-used-as-wi-fi-adapter-by-spisdio-or-i2cuart-interface-when-it-is-applied-to-other-mcu-design-1" aria-label="Heading link"> T…

[image] summguy: I can find practically no forum or github discussions about Sparkle / SparkleIOT. Looks like you are on your own. Could be a useful learning experience.

[image] westfw: ESP32 [image] Photos, memos, testing here: Sparkleiot XH32S Sparkleiot XH32S

The board I have, and possibly many of these ESP-32 boards with LCD display, has a 2-pin speaker connector. I have identified a 2-watt audio amp (8002A) and touch screen controller (XPT 2046) but I don't see any I2S-based audio system. How do these boards drive the speaker output for audio?

[image] summguy: I don't see any I2S-based audio system. How do these boards drive the speaker output for audio? Basic sound can be done on all ESP boards. On some boards with two 8-bit DAC channels, on other boards with PWM pins. Leo..

I believe I have same board (DIYMall from AMZN), was able to locate good code examples here: http://pan.jczn1688.com/directlink/1/ESP32%20module/3.5inch_ESP32-3248S035.zip

Can someone explain the Sparkle XH-32S (I thought I was getting ESP-32)

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sonofcy July 26, 2025, 2:38am 2

Hard to say, the photo is a little blurry.

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Can someone explain the Sparkle XH-32S (I thought I was getting ESP-32)

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