Espruino Wifi and SPW2430(microphone)

Ok - so you think recording may be working now, but it's the playback that isn't?

Yes, on the WiFi you'd use PWM for output (it's only the original espruino board that has a DAC inside it).

Where is your speaker wired? Try this on your WiFi. I have the speaker wired between GND and B3, and it seems to work fine - it plays a 'ding' noise (which is uploaded in the base64 code).

var wave = atob("e357fnp/eoB4g3hxknV4gW2OgWOXe22FhW­OQgW2CgnGJgWmJgWqMgGyIgG2JgmqJgGqNgmmKgG­mMgGqOf2iNgGmNgGmNgWmOgWiNgWiNgWiMgmiMgm­eMgmaNgWiNgmiNgWqLgmuKgWyHgmyHgG6FgmyIgG­yKf2yKf22JgG2JgG6HgHCIfm+IfnGGf3GGfnGGgH­GFf3KEgHGGf3KEf3KEfnSDf3SDfnaBf3WCfXiAfn­aCfHl+gHaCe3t7g3CSjWJ7gHuKhnx9bHx9jXt5dX­GGhX18cHh+in16d3GDhX1/cXl9hoB6d3OAhX6Acn­p7hoB9dnZ7iHuFa46JY4F4gYOBhnljfnaOhHhtdI­R+kXZpgHOKjHdvdn2BkXhsfm+Jj3Z2c3iCkXtuf2­uHkXZ8c3GDjn5yfWmEk3WBc22Ei4B1e2mBkneCdW­uEiYJ5emx/k3iDdmqGhoJ8dm1+kXqEdmeIg4GBcm­5+jXyGdmaJgoCFb25+in+Hd2WJgICJa26AhoKIeG­WIf36NaW2BgoWKd2eHfX2OaWyCfoiLeGmFfXuOam­qEeYuKgG98f4CVZ2SDgIWKeXZ/dnqVa2KCfYeKeH­l+dnqUcGOAfIiLdnx8d3ePemN7eIiOd358dXqPem­l1fIOdeXB/f4eDcmmBbn6RhHpsdo6GdW59c32Qhn­5scY+Hd3B5dXuMhoNtbY6HeXN3dnqJhoZvao2Ien­Z0eHqGh4hxZ4qIfXhxeHmCiYpzZYeIf3tveXl+io­x2ZIGIgX5uenl6iox6ZXuHhIBuenl2i4x9aHaGh4­JueXpzi4x9bHGDiYRueXpxiox/cG2BjIVweXpwiY­yAdGh+joVyeHpwiIuBeGV7kIZ0eHhwhYqDfGN2kY­Z3eHdxg4mEgWJxkYd7eHVygYeFhGNtkYd+enJzgI­WHh2Rpj4eCe290foSIiWVljoeFfW11fYGJimhji4­iGf2t2fX+Ji2xhiIiIgml2fX2JjG9gg4mJhGl1fn­uIjHJhf4mJhml0f3mIi3VjeoiLh2p0f3iHinhmdo­iMh2xzgHeGiXprcoaMiG1zgHeEiHtvcIKNiG9ygH­eDiHt0bn6OiXFygHaBh3x4bnuNiXRygHZ/hnx7cH­eMiXZyf3h9hnx+cXSLiXhxf3l7hX2AdHGIinpxfn­t5hH2AeHCFin1xfH14g32Be2+CiX9yen93gX6Bfm­9/iIFzd4B3gH+AgXB8h4F1doF3foB/hHF5h4F2dY­B5fIB/h3R1hoF4dX96e39+indyhYF5dn16en9+i3­pvhIB6eHp7en5+jH5sgoB6end6en5+joFrgIB6fX­V5e3x/joVqfoF5f3J3fHx/j4hpe4F6gnF0fXuAj4­prd4F6hHFxfnuAj4xtdIF5hXJuf3qBj4xwcn97h3­Nrf3qBkI1zcH17iHRpf3mBkI12b3p8iXZofnmBko­16bnZ8iXhmfXmAkox9b3J7inpme3mAk4x/cG96in­xmeXl/lIyBc2x4in9ndnh+lY2DdGl3iYFoc3h9lI­6Fd2d1iINrcHl8k4+GeWZzhoVtbXh8kpCHfGdwhI­Vxa3d9j5KIfmhugYZ1aXZ9jZOJf2ltf4V4aHR+i5­OLgWxrfIR7aXJ/iJOMgm5peYN+anB/hpKOhHJodo­KAbG5/hZGPhXZndIGBb2x9g5CPhnlncYCCc2t7go­+Qh31obX+Cdmx4gI6Qh4Fpa36BeW12f4yQiIRqaH­2BfG5zfouQiIdtZXuAfnBxfYmQiIlwZHp/gHNue4­iQiYp0Y3h+gnZseoaPiop3Y3Z8gnpreYWNi4p6ZX­N7gn1qeIOLjYp9Z3F6g4Bpd4OIjop+am94g4NqdY­KFj4p/bW12goVrc4KDkIp/cWx0godscoGAkIt/dW­xygolvcIB+kI1+eGxwgYpxbn99j45+em1ugYp0bX­19jpB9fG5tgYp2bHt8jZB9fHBsgIp5bHh8jJF9fX­JsgIl8bHV9i5F9fHNsgIh9bnJ8ipF+fHVtgId/b2­98iZB/fHZtf4aAcmx7iY+Ae3huf4aBdGp5iY+Ben­lvfoWBd2l3iI6DeXpwfoWBeWh1ho2FeHpxfYaCe2­hzhYyHeHpze4eCfWlwhIuJeHl1eYeDfmpugoqLeH­d3d4eFfmxsgImNeXV5doaGf29qfYiOe3R7doWHf3­Fpe4aOfnN8doOIgHRpeIWNgHN8d4CIgHdqdoSLg3­R7eH6HgHpsc4OKhHV7eXyGgHxucIKIhXh6enuEgH­9xbYCGhnt5e3uDgIB0a3+EhX54e3uBf4J3an2DhI­J4e3t/f4N6anuCg4V5e3t8foN9a3iBgYd6e3x6fY­OAbHaAgIl7e314fIKCb3R+f4p9en53e4KDcnJ8fo­p/en91e4GDdnF6fYqAe4B0eYGCeXF4fYmCe4F0eI­GBfXJ1fImDfIJ0doGAgHRze4iEfIN0dIB+gndxeo­eFfYN1coB9g3pveYaFfoN2cYB8g31veIWGf4N4cH­58goBud4SGgIJ5b318goJvdYSHgYF7b3t8gYRxdI­OHgoB7cHp8f4Vzc4GHg398cXh8foV1c4CGhH98c3­d8fYV3c3+GhX98dHZ7fIV5c36FhX98dnZ6fIR7c3­2Ehn98d3V6e4N9dHyDhoB7eHV5eoJ/dXyDhoF7eH­Z5eYCBdnuChYJ7eXZ5eX+Cd3uChIN7eHd4eH6DeH­qCg4R7eHd4eHyDenmCg4R8d3h3eHuDfHiCgoR9dn­l3eHqCfniBgoR/dnl3eHqBf3mBgYSAdXl4d3qAgH­mAgYOCdXl4dnp/gXp/gIODdXl5dXp+gnx+gIKEdn­h6dHp9gn19f4GFd3h6dHp9gn98foGGeXd7c3p9gY­B8foCGe3Z7c3l9gIJ7fYCGfXZ7c3l+gIN7fH+Gf3­Z6dHh+f4R8en+FgHZ5dHd+f4R8en6Egnd4dXd+fo­R9eX6DhHh4dXZ+foR+eX2DhHl3dnZ+foN/eHyChX­t2d3V+foKBeHyBhXx2d3V9f4KCeHqAhX52d3V8f4­GDeXl/hYB2d3V8gH+Denh+hIF3d3V7gH+DfHd+g4­J4d3V6gX6DfXZ9goN6d3Z5gX6CfnV8goN7d3Z4gX­+CgHV7gYN9dnd4gH+BgXV6gIN/d3d4f3+AgnZ5f4­KAd3d4foB/gnd4f4GCeHd4fYB+gnl3foCDeXd5fI­B+gnp3fX+Dend6e4B+gXt3fH6Ee3Z7en9/gH13e3­2EfXZ7en5/f354enyEf3d8en6Af355eXuDgHd8en­yBfn56eHqCgnh8enuBfn97d3qBg3l8e3qBfX58d3­mAg3p7e3qBfX59d3l/hHx6fHmBfn1+d3l+g316fH­mAfn1/d3l9gn96fHp/fnx/d3h9gYF6fHp+fnyAd3­h9gIJ7e3t9fnyAeHh8f4R8ent9fnyAeXd8foR9eX­t8fnx/end8fYR/eHt8fn1/end8fISAeHt8fn1/e3­d8fIOCeHt8fX1+fHd7fIKDeXp8fX1+fXd6fIGEeX­l8fX59fXd6fICEenl7fX59fXh6fX+EfHl7fH58fX­l5fX+EfXh7fH58fnp5fX6Efnl7e358fXt5fX2DgH­l6e358fXx5fX2CgXl6e318fX15fHyBgnl6en18fH­56fHyAg3p6enx9fH56fHx/g3t6ent9fH57fHx+g3­x6enp9fH59fHx9g316enl9fH5+fHx8g356e3h8fH­1/fHx8gn96e3h7fX1/fXt7gYB6e3h6fX2Afnt7gI­F7e3h5fnyAf3t7f4F7e3h4fXyAgHt6foJ8e3h3fX­2AgXx6fYJ9e3h2fX2Agnx6fIF+e3l2fH2Agn16e4­CAe3l1e35/g316e4CAe3l1en5/g356en+BfHl1eX­5/hH96en6BfXl1eH5/hH96en2CfXl2d35/g4B7en­yBfnl2d31/g4F7e3uBf3l2dn1/g4J7e3uAgHl2dn­x/g4J7e3p/gXp2dnt/goN8fHp+gXp2dnp/goN9fH­t9gnt2dnp/gYN9fHt8gnx2dnl+gYN+fHt7gX12dn­h+gYN/fHx6gX12d3h+gYN/fHx6gH53d3h9gYKAfH­x6f393d3h9gYKAfH17f393d3h8gYGAfX17foB4d3­h8gYGAfX17fYB5d3h7gIGAfn18fX95d3h6gICAfn­18fH96d3h6gIB/f318fH97d3h6gIB/f319fH58eH­h5f4B+f319fH58eHh5foB+f319fX19eXh5foB+f3­18fX19eXh5fYB+f318fXx9enh5fIB+f358fnx9e3­h5fIB+f358fnx9fHl5e4B+fn58fnx8fHl5e39+fn­98fnx8fXl6e35+fn98fnx7fnp6e35+fX98fn17fn­p6e31+fX99fn16fnt6e3x+fX99fn16fnx6e3x9fX­99fn16fn16e3t9fX5+fX16fX56fHt8fX5+fX16fX­57fHt8fn5+fn16fH97fHt7fX5+fn16fH98fHt6fX­5+fn16e398fHt6fX5+fn16e399fHt5fX5+fn17en­9+fHx5fH5+f317en5+fXx5fH5+f317en5/fXx5e3­5+f317en1/fXx5e359f317enx/fnx5en59f357en­x/fn15en59f357e3t/f316eX19f357e3t/f316eX­19f357e3t+f316eX19f397e3t+gH17eXx9fn97e3­t9gH57eXx9fn98e3t8gH57eXt9fn98e3t8gH97eX­t9fn98e3t7f398enp9fn99e3x7f398enp8fn99e3­x7foB8enp8fn9+e3x7foB9e3l8fn9+e3x7fYB9e3­l7fn9+e3x7fYB9e3p7fn5+fHx7fIB9fHp6fX5+fH­t7fIB+fHp6fX5+fXt7e39+fHt6fX5+fXt7e39/fH­t5fX5+fXx7e35/fHt5fH5+fnx7e35/fXx5fH5+fn­x7e31/fXx6e35+fnx7e31/fXx6e35+fnx7e3x/fX­x6en5+fn17e3x/fnx6en5+fn17e3x+fn17en1+fn­17e3x+fn17en1+fn57e3x9fn17en1+fn57e3x9fn­18enx+fn58e3x9fn18enx+fn58e3x8fn18ent+fn­58e3x8fn58ent+fn59e3x8fn58e3t+fn59e3x8fX­59e3t9fn59e3x8fX59e3t9fn59e3x8fX59fHt9fn­5+e3x8fH59fHt8fn5+e3t8fH59fHt8fn5+fHt8fH­59fHt7fn5+fHt8fH5+fHt7fX5+fHt8fH5+fHx7fX­5+fHt8fH1+fHx7fX5+fXt8fH1+fHx7fX5+fXt8fH­1+fHx7fH5+fXt8fHx+fXx7fH5+fXx8fHx+fXx8fH­5+fXx8fHx+fXx8e35+fXx7fHx9fXx8e31+fXx7fH­x9fXx8e31+fX17fHx9fXx8e31+fX17fHx9fX18e3­x+fX18fHx9fX18e3x+fX18fHx8fX18fHx+fX18e3­x8fX18fHx+fX18e3x8fX19fHx9fX18e3x8fX19fH­t9fX19e3x8fX19fHt9fX19e3x8fX19fHt9fX19fH­x8fH19fHx8fX19fHx8fH19fHx8fX19fHx8fH19fH­x8fX19fHx9fH19fHx8fX19fHx8fH19fXw=");
var w = new Waveform(wave.length);
w.buffer.set(wave);
analogWrite(B3, 0.5, {freq:40000});
w.startOutput(B3,4000);